Which aleph for the bass and mids? - diyAudio
Go Back   Home > Forums > Amplifiers > Pass Labs

Pass Labs This forum is dedicated to Pass Labs discussion.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 29th November 2002, 07:22 PM   #1
diyAudio Member
 
Join Date: Feb 2002
Location: Flensburg
Default Which aleph for the bass and mids?

Which aleph amp is the best choise in a bi-amping system for bass and mids? Frequency range (40 - 1000 Hz); Output power/ch about 60-80 watts.

I think a good choise could be the aleph 5, but it has an damping factor of only 50.
The aleph 60 has a damping faktor of 100 and so more control for the bass.

Or an alephX? output power? damping faktor?


regards

GŁnter
  Reply With Quote
Old 29th November 2002, 07:32 PM   #2
The one and only
 
Nelson Pass's Avatar
 
Join Date: Mar 2001
The bigger the Aleph, the better the bottom.

Also, I wouldn't go by damping factor if I were you. I have
too many examples of high vs low DF examples where the
low had better control of the bass. Go figure.

  Reply With Quote
Old 30th November 2002, 10:13 PM   #3
diyAudio Member
 
Join Date: Oct 2002
Location: Holland, The Hague
A friend (an engineer in electronics) used PSpice to analyse the Aleph5 design. According to his calculations the damping factor is
at 8Ohm load:
100Hz: 266
1000Hz: 266
10000Hz: 140
20000Hz: 80
__________________
Is that all there is?
  Reply With Quote
Old 30th November 2002, 11:40 PM   #4
xcel is offline xcel  Netherlands
diyAudio Member
 
xcel's Avatar
 
Join Date: Sep 2001
Location: Almere
Quote:
The bigger the Aleph, the better the bottom
What are the arguments for this compelling statement, Nelson ? Is it the amount of available output current, or output resistance....Please elaborate.

Greetings,

Xcel
  Reply With Quote
Old 1st December 2002, 12:26 AM   #5
djk is offline djk
diyAudio Member
 
djk's Avatar
 
Join Date: Feb 2001
Location: USA
Damping factor is a virtually meaningless specification as regards bass quality.

If an amplifier has an output impedance of 0R05 it is said to have a DF of 160.

So what?

A typical 8R speaker will have a DCR of 5R, and the inductor in series with the woofer will add another 0R5, for a total of 5R55 (adding amplifier output impedance but neglecting any connecting wire).

If the amplifier had a DF of infinity the motional (generator) voltage of the speaker would still have 5R5 in series with it. And still 5R if bi-amped.

I own a transformer coupled amplifier with a DF of 14. It is much 'tighter' in the bass with much more 'slam' than amplifiers with DF in the range of 400 and UP.
  Reply With Quote
Old 22nd July 2008, 07:25 PM   #6
diyAudio Member
 
Join Date: Oct 2006
Hello

Could you give me the damping factor of the AlephX ?

thanks in advance
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Recomnbed woofers/Mids for punchy yet deep bass? xenu Multi-Way 14 21st April 2009 03:32 AM
Seas Excel mids vs. dayton rs mids in dipole sqlkev Multi-Way 2 10th July 2006 07:28 PM
full range for the mids and high, bass unit for the low? swin1 Full Range 12 20th May 2006 01:48 PM
Mids/Bass driver for TDL Fossil Multi-Way 2 14th February 2006 12:45 PM
Bass interference with mids fr0st Multi-Way 12 16th January 2003 10:36 PM


New To Site? Need Help?

All times are GMT. The time now is 08:55 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright ©1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2